[INFO] cloning repository https://github.com/holsee/rust_fas
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/holsee/rust_fas" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fholsee%2Frust_fas", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fholsee%2Frust_fas'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9470500964d566ab5838c0fcaf43b1450c7f8646
[INFO] checking holsee/rust_fas against master#0d37dca25a51fb900a402c94c8818ad1c2789e30 for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fholsee%2Frust_fas" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/holsee/rust_fas on toolchain 0d37dca25a51fb900a402c94c8818ad1c2789e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/holsee/rust_fas
[INFO] finished tweaking git repo https://github.com/holsee/rust_fas
[INFO] tweaked toml for git repo https://github.com/holsee/rust_fas written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/holsee/rust_fas already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 595e7e26246c602427d02e7cbd5e3d58d50ecb909c4db44a46ec3ed7f4766720
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "595e7e26246c602427d02e7cbd5e3d58d50ecb909c4db44a46ec3ed7f4766720", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "595e7e26246c602427d02e7cbd5e3d58d50ecb909c4db44a46ec3ed7f4766720", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "595e7e26246c602427d02e7cbd5e3d58d50ecb909c4db44a46ec3ed7f4766720", kill_on_drop: false }`
[INFO] [stdout] 595e7e26246c602427d02e7cbd5e3d58d50ecb909c4db44a46ec3ed7f4766720
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 95c5e462c765ad60b7c619ff9a4d775f12f9ce16618c378ecae90fe7c94f39dc
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "95c5e462c765ad60b7c619ff9a4d775f12f9ce16618c378ecae90fe7c94f39dc", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.21
[INFO] [stderr]     Checking futures v0.1.13
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking num_cpus v1.3.0
[INFO] [stderr]     Checking tokio-timer v0.1.1
[INFO] [stderr]     Checking futures-cpupool v0.1.5
[INFO] [stderr]     Checking prime_time v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.28s
[INFO] running `Command { std: "docker" "inspect" "95c5e462c765ad60b7c619ff9a4d775f12f9ce16618c378ecae90fe7c94f39dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95c5e462c765ad60b7c619ff9a4d775f12f9ce16618c378ecae90fe7c94f39dc", kill_on_drop: false }`
[INFO] [stdout] 95c5e462c765ad60b7c619ff9a4d775f12f9ce16618c378ecae90fe7c94f39dc